Joule Thief

[Mk1]

@all

My theory is that the led on the secondary , feeds back in the coil, that creates a kick , that kick is reabsorbed by the jt coil , lowering the battery draw...

With a load on the jt like the b cap , Gadget already gave those reading ...

Mark

[MrMag]

@all

My theory is that the led on the secondary , feeds back in the coil, that creates a kick , that kick is reabsorbed by the jt coil , lowering the battery draw...

With a load on the jt like the b cap , Gadget already gave those reading ...

Mark

I think your right. It would be the same as a shorted secondary winding. I think it would build up with some voltage and then discharge itself back through the torroid. I would amagine depending on how it was wound, it could have an additive or detrimental effect on the jt circuit. Once I get my bench cleaned off I think I'll try that out.

@Paul,

That is a beautiful scope isn't it. I have a couple myself but they are not storage scopes

[innovation_station]

5 FEEDS 1 COLPASE TRIGGER WIRE ONLY ~~TAPED~~    PULSE COLPASE WILL GET THE SAME TREATMENT NEXT THEN THE SECONDARY ....  OOOO  MY MY LOL ... 

http://www.youtube.com/watch?v=n9ZT12BC8_8


thank you

regards!

H

[xee2]

@ gadgetmall

? It read the same on both meters swapped . Also all current was done on Dc settings . The one showing 21.88 milliamps is a fluke meter set on Dc amps in the 300milliamp hole . I found a supplier but has a 100 part min order so i'll keep looking .
http://www.mouser.com/ProductDetail/Vishay-Dale/RW67V1R0B12/?qs=sGAEpiMZZMuQ5%2fsBR7SoAsgb9Zkfwd140SoGinADYIY%3d

Hi Gadget. Merry Christmas. As I said previously, I do not understand how you are getting higher current out of the JT than you are putting in. But, I do know that all of the meters you are using to measure the current are only made to measure constant currents and constant voltages (not pulsed voltages and pulsed currents). So they may, or may not, be giving accurate readings on the pulsed power coming out of the JT.

[jeanna]

My theory is that the led on the secondary , feeds back in the coil, that creates a kick , that kick is reabsorbed by the jt coil , lowering the battery draw...

Mark

This is interesting .
I have been setting up to test this today.
I have been wondering if the choking effect I had yesterday and xee2 had 2 days ago is related.
I have been thinking there needs to be enough bare toroid surrounding the primary that the oscillations are not  countered by the oscillations of the secondary.
I was wondering if there is a critical amount of physical space for the oscillations to rev up.
It seems that if I squeeze the wound secondary over itself to get it away from the primary wires the voltage goes up to a better reading.
It is still not as high as the one that went into the 19leds bulb... (but maybe this will teach me something!)

thank you,

jeanna